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Powerlon UltraPerm Lite Vapour Permeable Roofing Felt - 50m x 1.5m

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£56.78 Incl. VAT
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Product Description


Grade: 92gsm.
UltraPerm lite: Breathable roof underlay for all warm & cold, ventilated & unventilated pitched roof designs. Ultraperm lite can also be used for walls as a breather & air barrier.


  • Pitched roofing felt.
  • Metal clad roofs.
  • Breather wall protection.

Developed as a universal breather membrane, Powerlon UltraPerm is a high performance underlay for all roof designs. It can be used on warm and cold, supported and un-supported, ventilated and un-ventilated roofs. It is a non-woven composite membrane with exceptional water vapour transmission, hydrophobic (water repellent) characteristics and good UV stabilisation. The membrane also has good air barrier characteristics designed to improve the air-tightness of the building.

Powerlon UltraPerm is a top of the range third generation breather membrane for traditional cold roofs and modern warm roof installations. Powerlon UltraPerm is tough, tear resistant and durable with superior performance to traditional felts. 

Powerlon UltraPerm is BRE certified for warm and cold, supported and un-supported, ventilated and un-ventilated roof constructions and covers the UK and the Republic of Ireland.


  • Universal breathable underlay for any roof design.
  • BRE certified.
  • High water vapour permeability.
  • Exceptional water resistance.
  • High nail tear strength.
  • High tensile strength.
  • Pre-printed marking lines.
  • Illustrated installation instructions with each roll.
  • Manufactured to ISO EN 9001 quality assurance with full batch traceability.
  • Flame retardant.

Product Documents

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WIDTH 1500mm LENGTH 50m


Permeability Vapour Permeable
Air Tight
Roll Size 75m2

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Questions & Answers


Has this product got any writing on? Or is it just plain black?


The product has 'Powerlon' printed on it, along with the overlap lines. If you wanted a completely plain black option the best to go for would be the one linked below.



are there any chemicals in this product?


This is a breather membrane so would be like a sythetic fibre material, there is more technical data you can find on the suppliers site below.



Can this be sealed with tape? If so which tape do I use?


Yes, please see tapes on link below. The acrylic ones are for sealing laps between the felt, the bitumen one for when you are mechanically fixing onto a rafter etc to seal around the fixing.


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Powerlon UltraPerm Lite Vapour Permeable Roofing Felt - 50m x 1.5m

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